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Log in. Support PF! Buy your school textbooks, materials and every day products Here! JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Frictionless Situations - How to get Velocity -Time information. Thread starter Sonny18n Start date Dec 9, How do I get the Velocity-Time information? PhanthomJay Science Advisor. Homework Helper. Gold Member. PhanthomJay said:. You must log in or register to reply here. Last Post Nov 26, Replies 5 Views 2K.

Frictionless Car velocity. Last Post Feb 6, Replies 4 Views 1K. Velocity along a frictionless surface. Last Post Apr 23, Replies 6 Views 2K. Recoil velocity on frictionless surface. Last Post Nov 30, Embed a running copy of this simulation. Use this HTML to embed a running copy of this simulation.

You can change the width and height of the embedded simulation by changing the "width" and "height" attributes in the HTML. Embed an image that will launch the simulation when clicked. Explore the forces at work when pulling against a cart, and pushing a refrigerator, crate, or person. Create an applied force and see how it makes objects move.

force interactive frictionless situations worksheet answer key

Change friction and see how it affects the motion of objects. Browse legacy activities. Share an Activity! Translate this Sim.

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Skip for now. Search the PhET Website. Download Embed close. PhET is supported by. Original Sim and Translations About. Sample Learning Goals Identify when forces are balanced vs unbalanced. Determine the sum of forces net force on an object with more than one force on it.

Predict the motion of an object with zero net force. Predict the direction of motion given a combination of forces. Version 2. For Teachers. Teacher Tips Overview of sim controls, model simplifications, and insights into student thinking PDF.

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Please sign in to watch the video primer. Gomes; Dommenike M. Silva; Gilvandenys L. Costa, Jeirla A. Monteiro, Gilvandenys L. Related Simulations. Software Requirements. Offline Access Help Center Contact.A kg car and a kg car are lifted to the same height at a constant speed in a auto service station. The amount of work done by a force to displace an object is found from the equation.

Since the kg car weighs 2X as much as the kg car, it would require twice as much work to lift it the same distance. An arrow is drawn back so that 50 Joules of potential energy is stored in the stretched bow and string. A drawn arrow has 50 J of stored energy due to the stretch of the bow and string. When released, this energy is converted into kinetic energy such that the arrow will have 50 J of kinetic energy upon being fired.

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Of course, this assumes no energy is lost to air resistance, friction or any other non-conservative forces and that the arrow is shot horizontally. A child lifts a box up from the floor. The child then carries the box with constant speed to the other side of the room and puts the box down. How much work does he do on the box while walking across the floor at constant speed? For any given situation, the work done by a force can be calculated using the equation. A kg car is moving at How far will the car skid with locked brakes if it is traveling at When a car skids to a stop, the work done by friction upon the car is equal to the change in kinetic energy of the car.

For this reason, the skidding distance is directly proportional to the square of the speed. A detailed discussion of the distance-speed squared relationship can be found at The Physics Classroom Tutorial. A platform diver weighs N. She steps off a diving board that is elevated to a height of 10 meters above the water. The use of the work-energy theorem and a simple analysis will yield the solution to this problem.

Initially, there is only PE; finally, there is only KE. Assuming negligible air resistance, the kinetic energy of the diver upon hitting the water is equal to the potential energy of the diver on top of the board. A ball is projected into the air with J of kinetic energy. The kinetic energy is transformed into gravitational potential energy on the path towards the peak of its trajectory. Do consider the effects of air resistance. During any given motion, if non-conservative forces do work upon the object, then the total mechanical energy will be changed.

If non-conservative forces do negative work i.Any force or combination of forces can cause a centripetal or radial acceleration. Any net force causing uniform circular motion is called a centripetal force. The direction of a centripetal force is toward the center of curvature, the same as the direction of centripetal acceleration. You may use whichever expression for centripetal force is more convenient.

Centripetal force F c is always perpendicular to the path and pointing to the center of curvature, because a c is perpendicular to the velocity and pointing to the center of curvature. This implies that for a given mass and velocity, a large centripetal force causes a small radius of curvature—that is, a tight curve.

Figure 1. The frictional force supplies the centripetal force and is numerically equal to it. Centripetal force is perpendicular to velocity and causes uniform circular motion. The larger the F cthe smaller the radius of curvature r and the sharper the curve. Friction is to the left, keeping the car from slipping, and because it is the only horizontal force acting on the car, the friction is the centripetal force in this case.

Thus the centripetal force in this situation is. Now we have a relationship between centripetal force and the coefficient of friction.

Using the first expression for F c from the equation.

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The coefficient of friction found in Part 2 is much smaller than is typically found between tires and roads. The car will still negotiate the curve if the coefficient is greater than 0. Note that mass cancels, implying that in this example, it does not matter how heavily loaded the car is to negotiate the turn.

force interactive frictionless situations worksheet answer key

Mass cancels because friction is assumed proportional to the normal force, which in turn is proportional to mass. If the surface of the road were banked, the normal force would be less as will be discussed below.

Figure 2. This car on level ground is moving away and turning to the left.

Frictionless Situations - How to get Velocity -Time information

The centripetal force causing the car to turn in a circular path is due to friction between the tires and the road. A minimum coefficient of friction is needed, or the car will move in a larger-radius curve and leave the roadway. Let us now consider banked curveswhere the slope of the road helps you negotiate the curve.

See Figure 3. Race tracks for bikes as well as cars, for example, often have steeply banked curves. For ideal bankingthe net external force equals the horizontal centripetal force in the absence of friction. The components of the normal force N in the horizontal and vertical directions must equal the centripetal force and the weight of the car, respectively. In cases in which forces are not parallel, it is most convenient to consider components along perpendicular axes—in this case, the vertical and horizontal directions.Teachers Pay Teachers is an online marketplace where teachers buy and sell original educational materials.

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Forces and Motion: Basics

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force interactive frictionless situations worksheet answer key

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Net Force and Force Diagrams.Kinematics Newton's Laws Vectors and Projectiles. What Can Teachers Do The Force Interactive is an adjustable size file that displays nicely on just about any device - on smart phones, tablets such as the iPad, on Chromebooks, and on laptops and desktops.

The compatibility with iPads, other tablets, and Chromebooks make it a perfect tool for use in a classroom. It can be used in full-screen mode click the hot spot in the upper-left corner of the iFrame window or its dimensions can be adjusted to just about any dimension by dragging the lower-right corner of the iFrame.

This Interactive can be used at just about any stage of the learning cycle on Newton's second law of motion. The Interactive provides an environment for investigating numerous concepts.

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Such concepts include. The Physics Classroom has provided a couple of PDFs illustrating how the Interactive might be used with a classroom of students. The Interactive does not directly report the acceleration of the box. Coordinate values display in a small field. These coordinates can be used to determine the slope of the line and the acceleration of the object. There are numerous resources at The Physics Classroom website that serve as very complementary supports for the Force Interactive.

These include:. Follow Us.If we can't tunnel through the Earth, how do we know what's at its center?

force interactive frictionless situations worksheet answer key

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Hottest Questions. Previously Viewed. Unanswered Questions. What are the answers to the quiz on Gizmo Force and fan carts? Wiki User The cart's speeds are shown below. If the fan were set to Medium instead, what could the cart's speed be at 5 seconds?

If a lower fan speed were used, less force would be applied. This would cause a slower change in the cart's speed. So, the cart would be rolling more slowly than The only choice that is less than In the Gizmo, forces can speed the cart up fan or slow the cart down friction. Answer choice A is incorrect because a moving object will keep moving at the same speed if there is no force acting on it like the cart after the fan was turned off.

Answer choice C is incorrect because no force is required for a motionless object to remain at rest. Answer choice D is not correct because a moving object will naturally move in a straight line if there is no force. She then measures the speed each second afterward. At 10 seconds the cart has a speed of 20 cm per second.

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How fast will the cart be moving at 12 seconds? Ten seconds later it was moving 20 cm per second. Therefore, every second the cart is gaining 2 cm per second. So, after 11 seconds the speed will be 22 cm per second. After 12 seconds the speed will be 24 cm per second. If you change the fan speed from High to Lowwhat will occur?

The cart will stop moving. The cart will slow down.